fix(filebrowser): improve host warning text and add to filebrowser addon

- Clarify that passthrough drives are not visible on the Proxmox host
- Mention incorrect disk usage stats and incomplete file browsing
- Add same warning to filebrowser (non-quantum) addon which also serves from /
- Reduce verbosity, remove redundant phrasing

tools/addon/filebrowser.sh

@@ -41,6 +41,21 @@ IP=$(ip -4 addr show "$IFACE" | awk '/inet / {print $2}' | cut -d/ -f1 | head -n
 [[ -z "$IP" ]] && IP=$(hostname -I | awk '{print $1}')
 [[ -z "$IP" ]] && IP="127.0.0.1"
 
+# Proxmox Host Warning
+if [[ -d "/etc/pve" ]]; then
+  echo -e "${RD}⚠️  Warning: Running this addon directly on the Proxmox host is not recommended!${CL}"
+  echo -e "${YW}   Only the boot disk will be visible — passthrough drives will not be indexed.${CL}"
+  echo -e "${YW}   This causes incorrect disk usage stats and incomplete file browsing.${CL}"
+  echo -e "${YW}   Install this addon inside an LXC and mount your drives there instead.${CL}"
+  echo ""
+  echo -n "Continue anyway on the Proxmox host? (y/N): "
+  read -r host_confirm
+  if [[ ! "${host_confirm,,}" =~ ^(y|yes)$ ]]; then
+    echo -e "${YW}Aborted.${CL}"
+    exit 0
+  fi
+fi
+
 # Detect OS
 if [[ -f "/etc/alpine-release" ]]; then
   OS="Alpine"